EP1155909B1 - Capteur de position de pédale - Google Patents

Capteur de position de pédale Download PDF

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Publication number
EP1155909B1
EP1155909B1 EP01111606A EP01111606A EP1155909B1 EP 1155909 B1 EP1155909 B1 EP 1155909B1 EP 01111606 A EP01111606 A EP 01111606A EP 01111606 A EP01111606 A EP 01111606A EP 1155909 B1 EP1155909 B1 EP 1155909B1
Authority
EP
European Patent Office
Prior art keywords
transmitting unit
unit according
pedal travel
pedal
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01111606A
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German (de)
English (en)
Other versions
EP1155909A1 (fr
Inventor
Manfred Becker
Ralf Kapell
Rainer Oberheim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ASG Luftfahrttechnik und Sensorik GmbH
Deere and Co
Original Assignee
ASG Luftfahrttechnik und Sensorik GmbH
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ASG Luftfahrttechnik und Sensorik GmbH, Deere and Co filed Critical ASG Luftfahrttechnik und Sensorik GmbH
Publication of EP1155909A1 publication Critical patent/EP1155909A1/fr
Application granted granted Critical
Publication of EP1155909B1 publication Critical patent/EP1155909B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
    • B60Q1/441—Electric switches operable by the driver's pedals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/048—Means for indicating condition of the switching device containing non-mechanical switch position sensor, e.g. HALL sensor

Definitions

  • the invention relates to a Pedalweggeberiser for determining a Pedalweggna.
  • the Pedalweggeberiser contains at least one actuating lever and at least one switching element.
  • the actuating lever is arranged in a housing, mounted on a rotation axis and rotatable by a pedal.
  • the actuator of the switching element can be actuated by turning the actuating lever.
  • a pedal which detect the pedal position and output corresponding control signals.
  • an agricultural tractor has a right and a left brake pedal, which are separately operable to pass through tight curves.
  • Each brake pedal acts directly on a brake cylinder.
  • the triggering element of a brake light switch which switches when operating the pedal and emits an electrical signal to the brake light.
  • the switching point is often subject to a relatively pronounced hysteresis, which is acceptable for the brake light operation.
  • the object underlying the invention is seen to provide a Pedalweggebererritt of the type mentioned, by which the above problems are overcome.
  • the Pedalweggebererritt should allow reliable detection of the pedal position with reproducible, largely hysteresis-free switching points, be simple and allow easy installation without the need for adjustment measures and readjustments.
  • the housing of the above-mentioned Pedalweggeberica on a housing opening, which allows an external access to a lying outside the axis of rotation of the actuating lever to expose the actuating lever to the influence of a pedal movement.
  • the pedal directly, without interposition of other components, such as shafts, levers, and the like, acts on the pivotally mounted actuating lever.
  • the pivotal mounting of the operating lever is of particular advantage because it significantly reduces the risk of jamming or sticking, as opposed to linear movements.
  • the Pedalweggeberharm can thus be prepared separately as a simple, pre-aligned component and fasten by simple means, such as by screw, without the need for adjustment measures and readjustments in the vicinity of the pedal lever. Special arrangements for the power transmission between the pedal lever and the operating lever of Pedalweggebersaku are not required.
  • the actuating lever as an angle lever, which is rotatably mounted in the housing at its first leg end.
  • the end portion of the second lever leg exits with its end face from the housing opening.
  • At the front of this leg of the pedal lever is located, wherein the pedal force acts substantially perpendicular to the end face and pivots the angle lever about its axis of rotation.
  • the two legs of the angle lever can, for example, occupy an angle of approximately 90 ° to each other.
  • the design as an angle lever has the advantage that only a relatively small housing opening for the second leg end must be formed in the housing, since this leg end performs no significant transverse movement with respect to the housing opening.
  • the housing is made compact and stable.
  • the housing walls, in particular the bushings for electrical lines, are hermetically sealed, so that environmental influences such as dust and spray do not affect the operation of the Pedalweggebererü.
  • the housing is sealed off from the actuating lever, in particular with respect to its second leg end, by a flexible rubber boot.
  • the actuator of the switching element is arranged in the region of the knee of the angle lever and is located approximately opposite the end face of the second leg end. In the knee area, the deflection of the angle lever is greatest, so that the switching element can respond relatively accurately to actuations of the pedal lever.
  • the switching element is preferably a microswitch with a pushbutton switch as the actuating element.
  • Suitable microswitches are sold for example by the companies Cherry and Honeywell with branches in Auerbach / Opf., DE and Offenbach, DE under the name Micro Switch or miniature base switch. These are low-cost mass-produced items that are mechanically strong and versatile.
  • the special feature of these switches is their high switching capacity (for example, 25 A) with a small size (for example, 30 mm x 20 mm x 10 mm).
  • At least one stop is arranged in the movement path of the spring tongue, which limits the deflection region of the spring tongue.
  • the stop may be integrated, for example, in the housing contour.
  • the operating lever is urged by a spring in a position corresponding to the position of the depressed pedal (eg., Brake position) and in which the actuator of the switching element is not actuated by the actuating lever.
  • the spring engages, for example, a helical compression spring, in the knee area of the Actuator lever and urges the operating lever against the direction of force of a pedal operation.
  • the actuating lever acts on at least one measuring device for generating an electrical signal corresponding to the respective rotational position of the actuating lever.
  • the switching signal of the switching element is thus also an analog, the rotational position of the actuating lever and thus the pedal stroke corresponding electrical signal available.
  • At least one Hall sensor and at least one magnet in the measuring device.
  • Such a trained measuring device operates contactless, contains no sliding contacts and allows for high accuracy, the reliable, by corrosion and other disturbances largely independent recording of measured values.
  • a Hall sensor is very sensitive to changes in the magnetic flux, so that small angular movements of the operating lever can be detected.
  • the characteristic of the Hall sensor, d. H. the dependence of the sensor signal on the position of the actuating lever can be easily adapted to predetermined wishes or requirements by adjusting the electrical Hall sensor circuit or by programming the transmitter.
  • no high demands must be placed on the accuracy of the assembly of Hall sensor and permanent magnet, since deviations can be compensated subsequently by electrical or electronic adjustment.
  • a moving permanent magnet is arranged on the actuating lever, while the Hall sensor is stationary in the housing in the magnetic field region of the permanent magnet.
  • the permanent magnet is moved by an operation of the operating lever, the magnetic flux in the region of the Hall sensor and thus its output signal changes.
  • the permanent magnet is disposed on the actuating lever in the region of its axis of rotation and aligned so that its magnetic north pole and the magnetic south pole connecting line is aligned approximately perpendicular to the axis of rotation of the actuating lever.
  • the Hall sensor is arranged approximately in the running between the magnetic north pole and the magnetic south pole of the permanent magnet center plane .
  • the Hall sensor signal is approximately proportional to the rotational position of the permanent magnet and thus proportional to the deflection of the actuating lever and the pedal stroke.
  • a magnetic shield for example an iron sheet
  • a Pedalweggeberica is advantageous in which two actuating levers are rotatably mounted in a single sealed housing, which are each exposed to the action of an associated brake pedal.
  • Each of the two actuating lever is associated with at least one switching element and / or at least one measuring device.
  • the Pedalweggeberiser invention can be formed in a particularly advantageous manner as a preassembled module in which all the pedal position detecting components are housed in a hermetically sealed housing.
  • This module can for example be completely manufactured and adjusted by a component supplier. It can then be attached as a unit in the final assembly of the vehicle in the region of the pedal, without readjustments are required.
  • the modular design also makes it possible to provide different options for different requirements with a uniform housing shape and identical design of the operating lever or. For example, in a standard housing with two operating levers, either two switches and only one sensor, or two switches and one relay, or two switches and two sensors, or two switches, two sensors and a relay can be arranged.
  • the Pedalweggeberiser allows reliable detection of the pedal position with high sensitivity of the measuring device and reproducible switching points of the switching element. Due to the precise pre-adjustment hysteresis effects of the switching elements can be avoided or reduced.
  • the pedal position corresponding signal of the measuring device for example, for electronic control of the vehicle engine or for influencing the Motor characteristic can be used.
  • the brake pedal assembly shown in Fig. 1 includes two brake pedals 10, 12 which are pivotally mounted in a rotational axis 14. Each brake pedal 10, 12 acts on an associated brake piston 16, 18, wherein both brake pistons 16, 18 are arranged in a common brake valve housing 20.
  • the brake pedals 10, 12, can be operated independently. However, they can be connected by a locking bracket 21 with each other such that upon actuation of one of the brake pedals 10, 12 the other brake pedal 10, 12 is taken so that both brake pistons 16, 18 are actuated.
  • each brake pedal 10, 12 a transverse tab 22, 24 is formed, each receiving an adjusting screw 26, 28.
  • the screws 26, 28 can be fixed in the usual way by not shown lock nuts in their respective position.
  • Pedalweggeberaku 30 is screwed with two screws on the brake valve housing 20.
  • the housing 32 of the Pedalweggeberica consists of a cup-shaped base part 32 a and a lid 32 b, which can be secured by two screws 34 on the base part 32 a and hermetically closes the base part 32 a using a seal, not shown.
  • the lid can also be welded to the base part.
  • the actuating lever 38 is formed as an angle lever and has a first leg 40, at its free end portion of the actuating lever 38 is rotatably mounted about a rotation axis 36.
  • the second leg 42 of the angle lever projects out of the sensor housing 32 through a housing opening 44.
  • the two legs 40, 42 at an angle to each other, which is almost 90 °.
  • the angle lever 38 has, for reasons of material savings and weight reduction, not shown cavities.
  • the knee region 68 it contains a recess 50 in which one end of a helical compression spring 52 engages, which is supported at its other end on an intermediate wall 48 of the sensor housing 32.
  • the compression spring 52 presses the second leg 42 through the housing opening 44 of the sensor housing 32 to the outside, so that the end face 46 of the second leg 42 bears against the associated adjusting screw 26, 28.
  • the second leg 42 is aligned so that its Center line 49 about the middle of the end face 46 of the second leg 42 cuts and is directed to the actuator 58 of a switching element 56.
  • a flexible rubber boot 54 is provided, which seals the sensor housing 32 against the second leg 42 of the angle lever 38.
  • the rubber boot 54 allows for sufficient movement stroke of the angle lever 38.
  • Each of the two actuating lever 38 is associated with a mounted inside the housing microswitch 56, of which in Fig. 3 also only one can be seen.
  • the microswitch 56 has a switching pushbutton 58, by the actuation of which the switching state of the microswitch 56 can be influenced.
  • the shift pushbutton 58 is located in the knee area 68 of the actuating lever 38.
  • the actuating lever 38 includes a spring tongue 60, which is integrally formed in the region of the axis of rotation 36 and extends substantially parallel to the first leg 40.
  • the free end of the spring tongue 60 has a contact surface 62 which is opposite to the switching pushbutton 58 and is pressed against the switching pushbutton 58 upon actuation of the associated brake pedal 10, 12, whereby a switching function of the microswitch 56 is triggered.
  • the free end of the spring tongue 60 is a housing edge 64 opposite, which limits the deflection of the spring tongue 60 and so protects the switch button 58 against excessive load.
  • the stroke of the actuating lever 38 is limited by an inner housing wall 66, against the full operation of the operating lever 38 whose knee region 68 abuts. This measure also protects against damage.
  • the actuating lever 38 is cylindrical.
  • a cylindrical end portion 112 is a recess into which a permanent magnet 114 is formed.
  • the permanent magnet 114 is arranged such that its line connecting the magnetic north pole N and the magnetic south pole S 116 is aligned perpendicular to the axis of rotation 36.
  • a Hall sensor 118 with electrical leads 122 is mounted in the sensor housing 32.
  • the Hall sensor 118 is arranged approximately in the middle plane 120 extending between the magnetic north pole N and the magnetic south pole S of the permanent magnet 114.
  • electrical components such as relays and printed circuit boards can be accommodated in the sensor housing.
  • the housing wall is at least one not shown, hermetically sealed passage for electrical cables.
  • the lines connect the electrical components in the interior of the sensor housing 32 with the plug contacts of an integrated into the sensor housing 32 not shown plug.
  • a vehicle wiring harness can be connected to the plug.
  • Fig. 5 The electrical circuit shown in Fig. 5, which is disposed within the housing 32 of the Pedalweggeberiser was indicated in Fig. 5 by a dashed line 72.
  • the illustrated with conventional symbols components such as switches, Hall sensors, relays, resistors and capacitors can be mounted on a arranged in the sensor housing 32, not shown electrical circuit board.
  • the illustrated circuit includes two brake pedal switches 74, 76 corresponding to the microswitch 56 shown in FIG. 3 and each associated with one of two brake pedals 10, 12.
  • a battery terminal 78 of the brake pedal switches 74, 76 is connected to the vehicle battery, not shown.
  • the Battery terminal 78 via the brake pedal switches 74, 76 with a relay 80 whose second terminal 82 is grounded, in conjunction.
  • the relay 80 actuates a switch 84 which connects the battery terminal 78 with a brake valve relay 86, which is associated with the not shown air pressure brake of a vehicle trailer.
  • both brake pedal switches 74, 76 switch over by operation of the brake pedals 10, 12, the relay 80 drops and switches the switch 84, so that now the battery terminal 78 is on the one hand connected to the brake lights 88 of the vehicle and on the other hand via a terminal 90 not shown Brake lights of a vehicle trailer supplied with power.
  • the associated brake pedal switch 74, 76 via a terminal 92, 94 from a corresponding voltage signal to a non-illustrated electrical vehicle control.
  • Hall sensors 118, 119 are shown, each associated with a brake pedal 10, 12.
  • the connection of the Hall sensors 118, 119 with resistors and capacitors is carried out in the usual way and requires no further explanation, because it is obvious to the person skilled in the art.
  • the Hall sensors 118, 119 are connected via a first terminal 96 to a 5V voltage source and via a second terminal 98 to ground.
  • the output lines 100, 102 of the Hall sensor circuit are connected to a vehicle control not shown, which evaluates the detected by the Hall sensors 118, 119 brake pedal position in a suitable manner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Claims (17)

  1. Capteur de position de pédale destiné à déterminer une position de la pédale, comportant au moins un levier de manoeuvre (38), qui est logé dans un boîtier (32), est monté sur un axe de rotation (36) et qui peut tourner au moyen d'une pédale (10, 12), et comportant au moins un élément de commande (56), dont l'organe de manoeuvre (58) est apte à être actionné sous l'effet d'une rotation du levier de manoeuvre (38), le boîtier (32) comportant une ouverture (44) permettant d'accéder de l'extérieur vers une zone du levier de manoeuvre (38), située en dehors de l'axe de rotation (36), afin que le levier de manoeuvre (38) soit exposé à l'influence d'un mouvement de la pédale, caractérisé en ce que le levier de manoeuvre (38) agit sur au moins un dispositif de mesure (114, 118) destiné à générer un signal électrique correspondant à la position de rotation respective du levier de manoeuvre (38).
  2. Capteur de position de pédale selon la revendication 1, caractérisé en ce que le levier de manoeuvre (38) est un levier coudé, qui est monté rotatif sur l'extrémité de sa première branche (40) et dont l'extrémité de sa deuxième branche (42) s'avance avec sa face frontale (46) hors de l'ouverture (44) du boîtier et est exposée à une force exercée par la pédale sensiblement perpendiculairement sur la face frontale (46).
  3. Capteur de position de pédale selon la revendication 1 ou 2, caractérisé en ce que le boîtier (32), au niveau de l'ouverture (44), est rendu étanche, au moyen d'une manchette en caoutchouc (54) flexible, par rapport au levier de manoeuvre (38), en particulier par rapport à l'extrémité de la deuxième branche (42).
  4. Capteur de position de pédale selon la revendication 2 ou 3, caractérisé en ce que l'organe de manoeuvre (58) de l'élément de commande (56) est disposé dans la zone du coude (68) du levier coudé (38) et à peu près en face de la face frontale (46) de l'extrémité de la deuxième branche (42).
  5. Capteur de position de pédale selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'élément de commande (56) est réalisé sous la forme d'un microcontact avec un bouton de commande à pression (58).
  6. Capteur de position de pédale selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'une languette flexible (60), dont l'extrémité libre agit sur l'organe de manoeuvre (58) de l'élément de commande (56), est fixée sur le levier de manoeuvre (38).
  7. Capteur de position de pédale selon la revendication 6, caractérisé en ce qu'au moins une butée (64), qui délimite la zone de déploiement de la languette flexible (60), est disposée dans la trajectoire de mouvement de la languette flexible (60).
  8. Capteur de position de pédale selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'un ressort (52), qui pousse le levier de manoeuvre (38) à l'encontre de la direction de la force d'un actionnement de pédale, entre en prise avec le levier de manoeuvre (38), en particulier dans sa zone coudée (68).
  9. Capteur de position de pédale selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le dispositif de mesure comporte au moins un capteur à effet Hall (118) et au moins un aimant (114).
  10. Capteur de position de pédale selon la revendication 9, caractérisé en ce qu'un aimant permanent (114) est disposé sur le levier de manoeuvre (38), et en ce que le capteur à effet Hall (118) est disposé de manière localement fixe dans le boîtier (32) dans la zone du champ magnétique de l'aimant permanent (114).
  11. Capteur de position de pédale selon la revendication 9 ou 10, caractérisé en ce que l'aimant permanent (114) est monté sur le levier de manoeuvre (38) dans la zone de l'axe de rotation (36) et est orienté de telle sorte que sa ligne (116) reliant le pôle nord magnétique (N) et le pôle sud magnétique (S) est sensiblement perpendiculaire à l'axe de rotation (36).
  12. Capteur de position de pédale selon l'une quelconque des revendications 9 à 11, caractérisé en ce que le capteur à effet Hall (118) est agencé à peu près dans le plan médian (120) passant entre le pôle nord magnétique (N) et le pôle sud magnétique (S) de l'aimant permanent (114).
  13. Capteur de position de pédale selon l'une quelconque des revendications 1 à 12, caractérisé en ce qu'un blindage magnétique pour le dispositif de mesure (114, 118) est agencé dans le boîtier (32).
  14. Capteur de position de pédale selon l'une quelconque des revendications 1 à 13, caractérisé en ce que dans le boîtier (32) sont montés rotatifs deux leviers de manoeuvre (38) qui sont exposés chacun à l'influence d'une pédale de frein (10, 12) associée et en ce qu'au moins un élément de commande (56) et/ou au moins un dispositif de mesure (114, 118) sont associés à chaque levier de manoeuvre (38).
  15. Capteur de position de pédale selon l'une quelconque des revendications 1 à 14, caractérisé en ce qu'au moins un relais électrique et/ou au moins une plaquette imprimée avec un circuit électrique sont agencés dans le boîtier (32).
  16. Capteur de position de pédale selon l'une quelconque des revendications 1 à 15, caractérisé en ce que le boîtier (32) est compact, stable et étanche face aux influences de l'environnement.
  17. Capteur de position de pédale selon l'une quelconque des revendications 1 à 16, caractérisé en ce que le capteur de position de pédale est réalisé sous forme de module pouvant être préfabriqué.
EP01111606A 2000-05-19 2001-05-12 Capteur de position de pédale Expired - Lifetime EP1155909B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10024921A DE10024921A1 (de) 2000-05-19 2000-05-19 Pedalweggebereinheit
DE10024921 2000-05-19

Publications (2)

Publication Number Publication Date
EP1155909A1 EP1155909A1 (fr) 2001-11-21
EP1155909B1 true EP1155909B1 (fr) 2006-11-22

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EP01111606A Expired - Lifetime EP1155909B1 (fr) 2000-05-19 2001-05-12 Capteur de position de pédale

Country Status (8)

Country Link
US (1) US6531667B2 (fr)
EP (1) EP1155909B1 (fr)
AR (1) AR029257A1 (fr)
AT (1) ATE345949T1 (fr)
BR (1) BR0102048A (fr)
CA (1) CA2347854C (fr)
DE (2) DE10024921A1 (fr)
MX (1) MXPA01005057A (fr)

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CN109115148B (zh) * 2018-09-27 2023-05-16 长春一东离合器股份有限公司 汽车踏板行程测试装置
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CN112066863B (zh) * 2020-11-10 2021-01-22 中国科学院宁波材料技术与工程研究所 一种动圈式直线电机位置校准装置及方法

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FR1481263A (fr) 1966-04-08 1967-05-19 Dispositif de commande électrique à pédale
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DE4407005C1 (de) * 1994-03-03 1995-03-09 Hella Kg Hueck & Co Fahrpedaleinrichtung
JP3427547B2 (ja) 1995-02-23 2003-07-22 日産自動車株式会社 回動アームの回動量検出装置
US5920048A (en) * 1996-02-16 1999-07-06 Illinois Tool Works Inc. Electrical switch and variable resistance module for vehicle brake pedal or accelerator and method of operation
DE29700862U1 (de) * 1997-01-20 1997-03-13 VDO Adolf Schindling AG, 60326 Frankfurt Pedaleinrichtung
US6064015A (en) * 1997-10-14 2000-05-16 Conntrol, International, Inc. Foot switches
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US6330838B1 (en) * 2000-05-11 2001-12-18 Teleflex Incorporated Pedal assembly with non-contact pedal position sensor for generating a control signal

Also Published As

Publication number Publication date
CA2347854C (fr) 2004-11-09
US6531667B2 (en) 2003-03-11
DE10024921A1 (de) 2001-11-22
MXPA01005057A (es) 2005-06-15
ATE345949T1 (de) 2006-12-15
AR029257A1 (es) 2003-06-18
CA2347854A1 (fr) 2001-11-19
DE50111482D1 (de) 2007-01-04
EP1155909A1 (fr) 2001-11-21
US20020056625A1 (en) 2002-05-16
BR0102048A (pt) 2001-12-26

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